Common-Core/ Grade 7
Science MCQ Based On Calculating velocity distance and time ii
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Common-Core Grade 7 - 7 Calculating velocity distance and time ii
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Speed = distance/time, How to calculate total distance
Velocity is distance coved per unit of time.
Distance is speed times time.
As both are moving in the same direction, so relative speed = speed of train - speed of loading truck, Distanced traveled= relative speed × time taken
use distance covered in first 2 hr. + distance covered in next 1 hr. = total distance and total time.
While converting decimal hours into minutes, these are to be multiplied with 60 and not by hundred.
Use total distance and total time to find out the avarage speed.
Recall how to calculate distance of the train
Average Speed =Total Distance Travelled/Total Time Taken
1(kilometer/hour) = 1000(meters) / 3600(seconds) = 5/18 (meters/second), which is its simplified form. To convert km/h to m/s, directly multiply the given value of speed by the fraction 5/18.
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